Refurbishment of the old Medway bridge, UK
Refurbishment of the old Medway bridge, UK
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英国老梅德韦桥翻新
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
D. A. Smith
中科院分区：
文献类型：
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作者：
D. A. Smith
原梅德韦桥建于20世纪60年代，由21跨预应力混凝土梁和双三室箱梁结构组成，总长近1公里，主跨152·4 m。它承载着英国肯特郡梅德韦河上 M2 高速公路的两条车道。随着新梅德韦大桥于 2002 年 8 月开通，作为公路局 A2/M2 科巴姆至 4 号交叉路口拓宽计划的一部分，现有桥梁上的所有交通都暂时改道，使 Costain-Skanska-Mowlem 合资企业 (CSM) 能够完全进入高架桥上部结构，以完成结构翻新的最后阶段。本文详细介绍了一些最终翻新要求的设计，并确定了为克服加固过程中现场遇到的几个问题而开发的解决方案。主要工作内容包括更换整个河上的悬跨、修复支撑预应力混凝土半节点以及重新评估引桥。 ...
The original Medway bridge, constructed in the 1960s, comprises 21 spans of pre-stressed concrete beams and twin three-cell box girder construction with an overall length of almost 1 km and a main span of 152·4 m. It carried both carriageways of the M2 motorway over the River Medway in Kent, UK. With the opening of the new Medway Bridge in August 2002 as part of the A2/M2 Cobham to junction 4 widening scheme for the Highways Agency, all traffic on the existing bridge was temporarily diverted giving Costain–Skanska–Mowlem joint venture (CSM) full access to the viaduct superstructure to complete the final phase of the structural refurbishment. This paper details the design of some of the final refurbishment requirements and identifies the solutions developed to overcome several problems encountered on site during the strengthening. Key items of work included replacing the entire suspended span over the river, repairing the supporting pre-stressed concrete half joints and re-assessing the approach viaducts. ...